This is a simple API to access Amazon's SQS, EC2, SimpleDB and DevPay LS web services. It uses the QUERY interfaces and patterns the methods after those available from Amazon in their SOAP client for these services.
Looking through our directory of travel APIs and getting lost? That's no surprise; we've cataloged 168 of them so far. Fortunately, Valentin Dombrovsky, CEO of Travelatus did a great service by focusing on the 5 he says, "are the ones that offer interesting opportunities for your site—no matter who you are, an OTA, an airline or a hotel chain, for example." Writing for Tnooz, the magazine that talks travel tech, his 5 picks are rome2rio, DealAngel, Evature, Flightstats, and InKnowledge's Taxi Fare Calculator.